leadless

1 of 2

adjective (1)

lead·less ˈlēd-ləs

: not having electrical leads (see lead entry 2 sense 3)

… focus on development of leadless pacemaker devices …—

Sambit K

leadless

2 of 2

adjective (2)

lead·less ˈled-ləs

: not containing lead

leadless paints

Word History

First Known Use

Adjective (1)

1998, in the meaning defined above

Adjective (2)

1809, in the meaning defined above

Time Traveler

The first known use of leadless was in 1809

See more words from the same year

Cite this Entry

Style

“Leadless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/leadless. Accessed 4 Nov. 2025.

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